Window cornice



FIG. 1 is a perspective view of a window cornice showing my new design;

FIG. 2 is a front elevational view thereof on a reduced scale;

FIG. 3 is a side elevational view of FIG. 2, the opposite side being a mirror image; and,

FIG. 4 is an enlarged fragmentary view of the bottom of the window cornice taken along line 4--4 in FIG. 1.

The rear of the window cornice forms no part of the claimed design. 

The ornamental design for a window cornice, as shown and described. 